st: how to recover data saved with tabstat ?

Can someone help me with this easy question I was not able to solve.
I have two numeric variables (see summarize) and I calculate with tabstat
a proportion of dead according to quarters (from 1 to 10) of sequential years .
**************************************************************
. summ op_quart dead

I want to copy the saved results in a new variable called proportion
gen proportion=.
(2207 missing values generated)

. replace proportion= `"10"' if op_quart==10
type mismatch
r(109);
****************************************************************************************************
I can't figure out how to recover the proportions (means), saved from a
simple tabstat procedure and place them in the new variable "proportion".
I was expecting each result to be saved in the local macros "10" to "1"
but my interpretation is not correct, how should be done ?
Also How can I read ( in a matrix I suppose) the entire matrices of
results r(Stat10) -r(StatTot)
I can't find a clue in the manuals !
Many thanks
Giulio Rizzoli Padova Italy